Back for loose-leaf ring books



BACK FOR LOOSE LEAF RING BOOKS Filed Nov 29. i929 Patented Jan. 6, 1931 JOHfi soHA E or noiiyoxn,,MA ssAoHnsEzr'rs, ss eNoR 3110 NATIONAL BLANK 300x oomranz-or HOLYOKE; messAoH sE'rTs,AooRroRArroNoF MAssAcHUsnTrs r BACK FoR oosE-L A-r RING rooxs; 1

Application filed. November 29 I1929.- Serial No. 410,893.

This invention relates to book. hacks for loose leaf bookssbut is particularly identified with devices of this description vwhich employ arch-shaped prongs that are carried by leaves pivotally connectedalongtheir inner edges and confined as to the. outer edges within a spring plate, these prongs being complementary parts of ringswhich'latter are formed when the prongs are in closed condition. w

-A construction-likethat above descrlbed is I known as a loose leaf ring binder, and the present invention'has nothing Whatever to do with the actual loose lea'fstructure and it is therefore immaterial whether the prongcarrying leaves areconfined within: a top spring plate or a bottom spring plate.

"This application isa continuation in. part of application Serial No;181 ,6 l1 filed April 7, 1927.

' The mainobjectofthe invention is to provide "a non-metallic book back, suitably shaped in cross-section and of. a length and width generally corresponding to thelength and width'of thebook, and inade'from a suitably shaped pressed or molded material such asvulcanite,papier-inach,bakelite,celluloid,

vulcanized fiber, or other suitable analogous non-metallic material, and the latter is colored and patterned to correspond with the coloring and pattern-desired, the book back carryingdevices which extend from its inner face and'are secured to one of the plates of the looseleaf structure.

the book back itself with fastening devices extending from its inner face. a Figure 3, is a sectional; the line 3-3 of Figure 1. I 1

Figurel is a section similarto Figure 8 but showing the book back secured t'o'the bottom plate of the loose leaf structure. 1

Figure 5 is a detail cross-section of the book. back showing the securing deviceextending or in any other suitable manner.

. detail' descri ereia ie a -sr I loosely throughtheback instead ofinolded theretoas shown in Figures 3 and 4. I a Figure 6 is a broken topview showing the loose leaf structure as it wouldappear when a. modified form of seouring the back to the structure is utilized, and

Figure? isa section at the line. 77 of Figure 6 I I .Siinilarnumeralsof reference denote like parts in the several figures of the drawing.

have been provided withside covers'an a back portion madeof leather or other suitable material; theback portion being either integral with the side covers and provided .on the-inside witha properly shaped metalstrip, or the back of the book has been niade of a suitably shaped metal strip to which the side covers are attached either by hinge elements book cover has been formed with the back portion consisting of an; inside metal plate but covered on the outside with leather, the latter, after constant usage becomes worn and unsightly since the main wearon abook v of this sortis on the back. In structures that have been designed to overcome this defect the back has been-made ofmetal which-is ex- When a 30 Heretofore loose leaf books of this style?" posed, the side covers being secured to the metal back in anysuitablerm'anner butthe, metalback beeomes tarnished, will mar ,the' surface of a desk and does not present asattractive. an appearance as is possessed a v bookbackwhieh is of the same color and patternas the side covers.

,. Referrl g to. Figures" 1,?2 1 of the .jd'rawings, 1 isjthef top plate of a loose leaf binder, and is m'adeof spring-metal with its lateral edges bentdownwardly and inwardly toform pockets'2, and 3 are-plates. hingedets, said plates carrying arch 'shaped prongs I The. construction. above described a well known form ofsring binder and requires no ptlon either as to. structure or p .ly connected along thei-ninner edges and with their outer edges confined within said pockthat 1 corresponds jtolthe length and ded within the back dduringtheprocess. of-J' molding or pressing, and which project from v the inner face of said back, and, in applying the back, these eyelets extend throughthe plates 8 and through perforations in the top plate 1 and are headed down'against 'the latter so as to unitethe back firmly to the loose leaf structure 7 Instead of these long eyelets, long hollow rivets 8 maybe employed, as shown at Figure 5, and theheads of these rivets'as well asthe eyelets maybe embedded in the back,

- or they may beseparate therefrom and extended loosely through the back asshown-in theinstance ofthe rivet at Figure 5.

In Figure 3, the plates 3 are confined within the top vplate, but such plates are frequently'confinedwithin pockets (1 in the bottom plate, as shown at Figure 4, and the structure ofthe binder in this respect is immaterial sofar as the application of theback is concerned, and in either instance, the back may be secured by'long eyelets 7 to the top plate as shown at Figure 3, or by short eyelets 9'through perforations in the bottom plate, as's'hown at Figure 4, and rivets may beem'ployed' inboth instances, if desired;

head of said screw'impinge's. against the plate associated therewith, in this'instanc'e,

the top plate 1.

Therefore, the manner of lets or rivets to the plates so as to bind the back in position is immaterial,and also it is within the scope of this inventon'to employ and means for securing said devices to the loose leaf structure.

2. A loose leaf book consisting of a loose leaf holding structure that comprises top and bottom plates, separable prongs, resiliently acting members carrying said prongs and housed within-one ofsaid plates, and a separate rigid back made'of a non-metallic imaterial suitably shaped in'cross-section and of a length andfwidth generally correspond- 'ing to the l'engtliand width'of the book, said 'back carrying, fastening devices and one of said plates having perforations through which latter ,said devices are passed and clinched whereby said back is secured as an unit to said book. I v

3. In a loose leafbook comprising a leaf holding structure, a separate rigid back made of a non-metallic material suitably shapedin' cross-section and of a length and width generally corresponding to the length and width of the book, said back carrying long eyelets and the cover plate of the loose leaf structure having perforations, said eyelets passed through said perforations and clinched whereby the'backis secured as an unit to the book. I 7

4.7 A loose leaf book consisting of a loose leaf holding structure that comprisestop and bottom plates, separable prongs, resiliently acting members carrying said prongs and housed within one ofsaid plates, and a V separate rigid back made-of a non-metallic material suitably shaped'incross -section and of a length and width generally corresponding to the length and width of the book, said back carrying fasteningdevices'and one of said plates having-perforations, and means forsecuring said devices through said per' forations to the plate containing them.

, Referring to Figures 7 and 8, a hollow rivet 10 is employed thatis interiorlythreaded as at 11,and it is headed by-means of a screw 12 driven'within the 'rivetso that the In testimony whereof I aflix my signature securing the eyedevices 'otherthaneyelets or rivets for the purpose. of binding'theback as an unitary pp noe, to the "loose leaf structure.

What is claimedis 1. A 10056 leaf book consiang ora' loose leaf holding structurefthat comprises top I ;and bottom plates and separable prongs and resilientlyp acting members gca'rrying said prongs and housed within one of said plates,

and a separate rigid back made of anon-metallicflmateria'l suitably shaped in cross-sec I j tlon and of a length and width generally co'rresponding to the length and width of the;

book,said back carrying fastening devices, 

